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3 years ago

Please help me on this

Mathematics

1 answer:

3241004551 [841]3 years ago

4 0

The answer to question number 22 - Congruent.
The answer to question number 24 - 0.18
The answer to question number 25 - 24

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Help please what type of angle is this, and what is x?

hammer [34]

Answer:

50 Pick me brainliest

Step-by-step explanation:

7 0

4 years ago

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Basic Computation: Testing M1 2 M2 A random sample of 49 measurements from a population with population standard deviation 3 had

Elenna [48]

Answer:

The sample statistics follows a standard normal distribution since the sample size are large enough.

Step-by-step explanation:

Given that:

<u>First population:</u>

Sample size $n_1$ = 49

Population standard deviation $\sigma_1$ = 3

Sample mean $\overline x _1$ = 10

<u>Second population:</u>

Sample size $n_2$ = 64

Population standard deviation $\sigma_2$ = 4

Sample mean $\overline x_2$ = 12

The sample statistics follows a standard normal distribution since the sample size are large enough.

The null and alternative hypotheses can be computed as:

$\mathbf{H_o:\mu_1=\mu_2}$

$\mathbf{H_1:\mu_1\ne\mu_2}$

Level of significance = 0.01

Using the Z-test statistics;

$Z = \dfrac{\overline x_1 - \overline x_2}{\sqrt{\dfrac{\sigma_1^2}{n_1} + \dfrac{\sigma_2^2}{n_2}}}$

$Z = \dfrac{10- 12}{\sqrt{\dfrac{3^2}{49} + \dfrac{4^2}{64}}}$

$Z = \dfrac{-2}{\sqrt{\dfrac{9}{49} + \dfrac{16}{64}}}$

$Z = \dfrac{-2}{\sqrt{0.18367 +0.25}}$

$Z = \dfrac{-2}{\sqrt{0.43367}}$

$Z = \dfrac{-2}{0.658536}$

Z = - 3.037

Z $\simeq$ - 3.04

The P-value = 2P (z < -3.04)

From the z tables

= 2 × (0.00118)

= 0.00236

Thus, since P-value is less than the level of significance, we fail to reject the null hypotheses $H_o$

5 0

3 years ago

A plan travels 800mi from Dallas,Texas to Atalanta,Georgia with a prevailing west wind of 49mph. The return trip against the win

anastassius [24]

Still need a snwer ?

4 0

3 years ago

if one inch represents 12 feet ,what dimentions whould you use to make a scale drawinng of a building 75 feet by 80 feet?

alina1380 [7]

Answer:

Step-by-step explanation:

1 inch to 12 ft = x inches to 75 ft

1 / 12 = x / 75

cross multiply

12x = 75

x = 75/12

x = 6.25 or 6 1/4 inches

1 inch to 12 ft = x inches to 80 ft

1 / 12 = x / 80

cross multiply

12x = 80

x = 80/12

x = 6.67 or 6 2/3 inches

so the dimensions are : 6 1/4 inches by 6 2/3 inches <====

4 0

4 years ago

Sqrt(25y^3)/sqrt(z^2)

bonufazy [111]

$\huge \underline{ \boxed{ \sf Answer}}$

Here's the solution ~

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \: \sqrt{ \dfrac{25 {y}^{3} }{ {z}^{2} } }$

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \: \sqrt{ \dfrac{5 \times 5 \times {y}^{} \times y \times y}{ {z}^{} \times z} }$

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \: \dfrac{5 \times y}{z} \times \sqrt{y}$

${ \qquad{ \sf{ \dashrightarrow}}} \: \: \sf \: \dfrac{5 y \sqrt{y} }{z}$

3 0

3 years ago

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